Red Super Giants have already passed their main sequence stage and are on the way to death. Luminosity also depends on how close the star is to us. But for arguments sake we will say that they are all the same distance away.
The brightest would be a Yellow Main sequence. Next would be a Red Super Giant, the faintest of all is the white dwarf this is the remaining core of a Red Giant Star, Not Super Giant, that has died. It is very dense, very faint about the size of Earth
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